linux-kernel - Re: [PATCH v4 0/3] tracing: add trace event for memory-failure

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Date:	Wed, 29 Apr 2015 19:14:27 +0800
From:	Xie XiuQi <xiexiuqi@...wei.com>
To:	<n-horiguchi@...jp.nec.com>
CC:	<rostedt@...dmis.org>, <mingo@...hat.com>,
	<akpm@...ux-foundation.org>, <kirill.shutemov@...ux.intel.com>,
	<koct9i@...il.com>, <hpa@...ux.intel.com>, <hannes@...xchg.org>,
	<iamjoonsoo.kim@....com>, <luto@...capital.net>,
	<nasa4836@...il.com>, <gong.chen@...ux.intel.com>,
	<bhelgaas@...gle.com>, <bp@...e.de>, <tony.luck@...el.com>,
	<linux-kernel@...r.kernel.org>, <linux-mm@...ck.org>,
	<jingle.chen@...wei.com>
Subject: Re: [PATCH v4 0/3] tracing: add trace event for memory-failure

Hi Naoya,

Could you help to review and applied this series if possible.

Thanks,
Xie XiuQi

On 2015/4/20 16:44, Xie XiuQi wrote:
> RAS user space tools like rasdaemon which base on trace event, could
> receive mce error event, but no memory recovery result event. So, I
> want to add this event to make this scenario complete.
> 
> This patchset add a event at ras group for memory-failure.
> 
> The output like below:
> #  tracer: nop
> #
> #  entries-in-buffer/entries-written: 2/2   #P:24
> #
> #                               _-----=> irqs-off
> #                              / _----=> need-resched
> #                             | / _---=> hardirq/softirq
> #                             || / _--=> preempt-depth
> #                             ||| /     delay
> #            TASK-PID   CPU#  ||||    TIMESTAMP  FUNCTION
> #               | |       |   ||||       |         |
>        mce-inject-13150 [001] ....   277.019359: memory_failure_event: pfn 0x19869: recovery action for free buddy page: Delayed
> 
> --
> v3->v4:
>  - rebase on top of latest linux-next
>  - update comments as Naoya's suggestion
>  - add #ifdef CONFIG_MEMORY_FAILURE for this trace event
>  - change type of action_result's param 3 to enum
> 
> v2->v3:
>  - rebase on top of linux-next
>  - based on Steven Rostedt's "tracing: Add TRACE_DEFINE_ENUM() macro
>    to map enums to their values" patch set v1.
> 
> v1->v2:
>  - Comment update
>  - Just passing 'result' instead of 'action_name[result]',
>    suggested by Steve. And hard coded there because trace-cmd
>    and perf do not have a way to process enums.
> 
> Xie XiuQi (3):
>   memory-failure: export page_type and action result
>   memory-failure: change type of action_result's param 3 to enum
>   tracing: add trace event for memory-failure
> 
>  include/linux/mm.h      |  34 ++++++++++
>  include/ras/ras_event.h |  85 ++++++++++++++++++++++++
>  mm/memory-failure.c     | 172 ++++++++++++++++++++----------------------------
>  3 files changed, 190 insertions(+), 101 deletions(-)
> 


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